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4. Troubleshooting
4-1-5. No Video (Tuner DTV)
Symptom
Audio is normal but no picture is displayed on the screen.
-
Check the DTV source
-
Major
Check the Chelsea
-
checkpoints
This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.
-
Caution
Make sure to disconnect the power before working on the PD board.
Diagnostics
7
5
4-16
No video
Yes
Check the RF source and
check the connection of RF cable?
Yes
Does the digital data appear
at pin15, 16 of TU5001?
Yes
Does the digital data appear at
pin14~42 of CN7005?
Yes
Check the LVDS cable?
Replace the LCD panel?
No
Input the RF signal.
Check the connected cable.
No
Check TU5001
Change the main PCB assembly.
No
Check IC7001
Change the main PCB assembly.
No
Please, contact Tech support
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